Finding the Fourth Proportional to 10,990.50, 16,471.52 and 7,040.23

Step by Step Solution

1. Step 1: Write the proportion equation
   10,990.50 : 16,471.52 = 7,040.23 : x
2. Step 2: Convert to fraction form
   10,990.50/16,471.52 = 7,040.23/x
3. Step 3: Cross multiply
   10,990.50x = 16,471.52 × 7,040.23
4. Step 4: Simplify right side
   10,990.50x = 115,963,239.27
5. Step 5: Solve for x
   x = 115,963,239.27/10,990.50
6. Step 6: Final answer
   x = 10,551.23